Anthraco-silicosis among hard coal miners
By: from the Office of Industrial Hygiene and Sanitation, Surg. R. R. Sayers, medical office in charge ... ; prepared by direction of the surgeon general.
Series: Public health bulletin -- no. 221
Publisher: U.S. Govt. print. off.
Published: 1936
Place of publication: Washington
Language: eng
Number of pages: 114
Subjects: Lungs -- Dust diseases.; Miners -- Diseases.; Coal mines and mining -- Pennsylvania.